VTechWorks staff will be away for the winter holidays starting Tuesday, December 24, 2024, through Wednesday, January 1, 2025, and will not be replying to requests during this time. Thank you for your patience, and happy holidays!

Browsing by Author "Cheng, G."

Now showing 1 - 7 of 7
  • Thumbnail Image
    First measurement of the muon antineutrino double-differential charged-current quasielastic cross section
    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; Marsh, W.; Mills, G. B.; Mirabal, J.; Moore, C. D.; Mousseau, J.; Nienaber, P.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. C.; Ray, H.; Roe, B. P.; Russell, A. D.; Shaevitz, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Van de Water, R. G.; Wascko, M. O.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D.; MiniBoo, N. E. Collaboration (American Physical Society, 2013-08-02)
    The largest sample ever recorded of (nu) over bar (mu) charged-current quasielastic (CCQE, (nu) over bar (mu) + p -> mu(+) + n) candidate events is used to produce the minimally model-dependent, flux-integrated double-differential cross section d(2)sigma/dT(mu) d cos theta(mu) for (nu) over bar (mu) CCQE for a mineral oil target. This measurement exploits the large statistics of the MiniBooNE antineutrino mode sample and provides the most complete information of this process to date. In order to facilitate historical comparisons, the flux-unfolded total cross section sigma(E-nu) and single-differential cross section d sigma/dQ(2) on both mineral oil and on carbon are also reported. The observed cross section is somewhat higher than the predicted cross section from a model assuming independently acting nucleons in carbon with canonical form factor values. The shape of the data are also discrepant with this model. These results have implications for intranuclear processes and can help constrain signal and background processes for future neutrino oscillation measurements.
  • Thumbnail Image
    Improved measurement of neutral current coherent π⁰ production on carbon in a few-GeV neutrino beam
    Kurimoto, Y.; Alcaraz-Aunion, J. L.; Brice, S. J.; Bugel, L.; Catala-Perez, J.; Cheng, G.; Conrad, Janet M.; Djurcic, Zelimir; Dore, U.; Finley, D. A.; Franke, A. J.; Giganti, C.; Gomez-Cadenas, J. J.; Guzowski, P.; Hanson, A.; Hayato, Y.; Hiraide, K.; Jover-Manas, G.; Karagiorgi, Georgia S.; Katori, T.; Kobayashi, K.; Kobilarcik, T.; Kubo, H.; Louis, W. C.; Loverre, P. F.; Ludovici, L.; Mahn, K. B. M.; Mariani, Camillo; Masuike, S.; Matsuoka, K.; McGary, V. T.; Metcalf, W.; Mills, G. B.; Mitsuka, G.; Miyachi, Y.; Mizugashira, S.; Moore, C. D.; Nakajima, Y.; Nakaya, T.; Napora, R.; Nienaber, P.; Orme, D.; Otani, M.; Russell, A. D.; Sanchez, F.; Shaevitz, Marjorie Hansen; Shibata, T. A.; Sorel, M.; Stefanski, R. J.; Takei, H.; Tanaka, H. K.; Tanaka, M.; Tayloe, R.; Taylor, I. J.; Tesarek, R. J.; Uchida, Y.; Van de Water, R. G.; Walding, J. J.; Wascko, M. O.; White, H. B.; Wilking, M. J.; Yokoyama, M.; Zeller, Geralyn P.; Zimmerman, E. D. (American Physical Society, 2010-06-16)
    The SciBooNE Collaboration reports a measurement of neutral current coherent π⁰ production on carbon by a muon neutrino beam with average energy 0.8 GeV. The separation of coherent from inclusive π⁰ production has been improved by detecting recoil protons from resonant π⁰ production. We measure the ratio of the neutral current coherent π⁰ production to total charged current cross sections to be (1.16 ± 0.24) x 10⁻². The ratio of charged current coherent π⁺ to neutral current coherent π⁰ production is calculated to be 0.14+0.30−0.28, using our published charged current coherent pion measurement.
  • Thumbnail Image
    Improved Search for (nu)over-bar(mu) -> (nu)over-bar(e) Oscillations in the MiniBooNE Experiment
    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; Marsh, W.; Mills, G. B.; Mirabal, J.; Moore, C. D.; Mousseau, J.; Nienaber, P.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. C.; Ray, H.; Roe, B. P.; Russell, A. D.; Shaevitz, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Van de Water, R. G.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D.; MiniBoo, N. E. Collaboration (American Physical Society, 2013-04-15)
    The MiniBooNE experiment at Fermilab reports results from an analysis of (nu)overbar(e) appearance data from 11.27 X 10(20) protons on target in the antineutrino mode, an increase of approximately a factor of 2 over the previously reported results. An event excess of 78.4 +/- 28.5 events (2.8 sigma) is observed in the energy range 200 < E-nu(QE) < 1250 MeV. If interpreted in a two-neutrino oscillation model, <(nu)over bar>(mu) -> (nu) over bar (e), the best oscillation fit to the excess has a probability of 66% while the background-only fit has chi(2) probability of 0.5% relative to the best fit. The data are consistent with antineutrino oscillations in the 0.01 < Delta m(2) < 1.0 eV(2) range and have some overlap with the evidence for antineutrino oscillations from the Liquid Scintillator Neutrino Detector. All of the major backgrounds are constrained by in situ event measurements so nonoscillation explanations would need to invoke new anomalous background processes. The neutrino mode running also shows an excess at low energy of 162.0 +/- 47.8 events (3.4 sigma) but the energy distribution of the excess is marginally compatible with a simple two neutrino oscillation formalism. Expanded models with several sterile neutrinos can reduce the incompatibility by allowing for CP violating effects between neutrino and antineutrino oscillations.
  • Thumbnail Image
    Improved Search for ν¯µ → ν¯e Oscillations in the MiniBooNE Experiment
    Collaboration, T. M.; Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; Marsh, W.; Mills, G. B.; Mirabal, J.; Moore, C. D.; Mousseau, J.; Nienaber, P.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. C.; Ray, H.; Roe, B. P.; Russell, A. D.; Shaevitz, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Water, R. G. V. D.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D. (2013-03-12)
    The MiniBooNE experiment at Fermilab reports results from an analysis of ¯νe appearance data from 11.27 × 10²⁰ protons on target in antineutrino mode, an increase of approximately a factor of two over the previously reported results. An event excess of 78.4 ± 28.5 events (2.8σ) is observed in the energy range 200 < EQE ν < 1250 MeV. If interpreted in a two-neutrino oscillation model, ν¯µ → ν¯e, the best oscillation fit to the excess has a probability of 66% while the background-only fit has a χ 2 -probability of 0.5% relative to the best fit. The data are consistent with antineutrino oscillations in the 0.01 < ∆m² < 1.0 eV² range and have some overlap with the evidence for antineutrino oscillations from the Liquid Scintillator Neutrino Detector (LSND). All of the major backgrounds are constrained by in-situ event measurements so non-oscillation explanations would need to invoke new anomalous background processes. The neutrino mode running also shows an excess at low energy of 162.0 ± 47.8 events (3.4σ) but the energy distribution of the excess is marginally compatible with a simple two neutrino oscillation formalism. Expanded models with several sterile neutrinos can reduce the incompatibility by allowing for CP violating effects between neutrino and antineutrino oscillations.
  • Thumbnail Image
    Measurement of inclusive neutral current pi(0) production on carbon in a few-GeV neutrino beam
    Kurimoto, Y.; Alcaraz-Aunion, J. L.; Brice, S. J.; Bugel, L.; Catala-Perez, J.; Cheng, G.; Conrad, Janet M.; Djurcic, Zelimir; Dore, U.; Finley, D. A.; Franke, A. J.; Giganti, C.; Gomez-Cadenas, J. J.; Guzowski, P.; Hanson, A.; Hayato, Y.; Hiraide, K.; Jover-Manas, G.; Karagiorgi, Georgia S.; Katori, T.; Kobayashi, K.; Kobilarcik, T.; Kubo, H.; Louis, W. C.; Loverre, P. F.; Ludovici, L.; Mahn, K. B. M.; Mariani, Camillo; Masuike, S.; Matsuoka, K.; McGary, V. T.; Metcalf, W.; Mills, G. B.; Mitsuka, G.; Miyachi, Y.; Mizugashira, S.; Moore, C. D.; Nakajima, Y.; Nakaya, T.; Napora, R.; Nienaber, P.; Orme, D.; Otani, M.; Russell, A. D.; Sanchez, F.; Shaevitz, Marjorie Hansen; Shibata, T. A.; Sorel, M.; Stefanski, R. J.; Takei, H.; Tanaka, H. K.; Tanaka, M.; Tayloe, R.; Taylor, I. J.; Tesarek, R. J.; Uchida, Y.; Van de Water, R. G.; Walding, J. J.; Wascko, M. O.; White, H. B.; Wilking, M. J.; Yokoyama, M.; Zeller, Geralyn P.; Zimmerman, E. D. (American Physical Society, 2010-02-01)
    The SciBooNE Collaboration reports inclusive neutral current neutral pion production by a muon neutrino beam on a polystyrene target (C8H8). We obtain (7.7 ± 0.5(stat.) ± 0.5(sys.)) x 10⁻²as the ratio of the neutral current neutral pion production to total charged current cross section; the mean energy of neutrinos producing detected neutral pions is 1.1 GeV. The result agrees with the Rein-Sehgal model implemented in our neutrino interaction simulation program with nuclear effects. The spectrum shape of the π⁰ momentum and angle agree with the model. We also measure the ratio of the neutral current coherent pion production to total charged current cross section to be (0.7 ± 0.4) x 10⁻².
  • Thumbnail Image
    Search for charged current coherent pion production on carbon in a few-GeV neutrino beam
    Hiraide, K.; Alcaraz-Aunion, J. L.; Brice, S. J.; Bugel, L.; Catala-Perez, J.; Cheng, G.; Conrad, Janet M.; Djurcic, Zelimir; Dore, U.; Finley, D. A.; Franke, A. J.; Giganti, C.; Gomez-Cadenas, J. J.; Guzowski, P.; Hanson, A.; Hayato, Y.; Jover-Manas, G.; Karagiorgi, Georgia S.; Katori, T.; Kobayashi, K.; Kobilarcik, T.; Kubo, H.; Kurimoto, Y.; Louis, W. C.; Loverre, P. F.; Ludovici, L.; Mahn, K. B. M.; Mariani, Camillo; Masuike, S.; Matsuoka, K.; Metcalf, W.; Mills, G.; Mitsuka, G.; Miyachi, Y.; Mizugashira, S.; Moore, C. D.; Nakajima, Y.; Nakaya, T.; Napora, R.; Nienaber, P.; Nguyen, V.; Orme, D.; Otani, M.; Russell, A. D.; Sanchez, F.; Shaevitz, Marjorie Hansen; Shibata, T. A.; Sorel, M.; Stefanski, R. J.; Takei, H.; Tanaka, H. K.; Tanaka, M.; Tayloe, R.; Taylor, I. J.; Tesarek, R. J.; Uchida, Y.; Van de Water, R. G.; Walding, J. J.; Wascko, M. O.; White, H.; Wilking, M. J.; Yokoyama, M.; Zeller, Geralyn P.; Zimmerman, E. D. (American Physical Society, 2008-12-01)
    The SciBooNE Collaboration has performed a search for charged current coherent pion production from muon neutrinos scattering on carbon, νυ 12C &8594; μ 12Cπ ⁺, with two distinct data samples. No evidence for coherent pion production is observed. We set 90% confidence level upper limits on the cross section ratio of charged current coherent pion production to the total charged current cross section at 0.67 x 102 at mean neutrino energy 1.1 GeV and 1.36 x 102 at mean neutrino energy 2.2 GeV.
  • Thumbnail Image
    Using L/E Oscillation Probability Distributions
    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, Janet M.; Dharmapalan, R.; Djurcic, Zelimir; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C. M.; Imlay, R.; Johnson, R. A.; Karagiorgi, Georgia S.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, Camillo; Marsh, W.; Mills, G. B.; Mirabal, J.; Moore, C. D.; Mousseau, J.; Nienaber, P.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. C.; Ray, H.; Roe, B. P.; Russell, A. D.; Shaevitz, Marjorie Hansen; Spitz, Joshua; Stancu, Ion; Tayloe, R.; Water, R. G. V. D.; White, D. H.; Wickremasinghe, D. A.; Zeller, Geralyn P.; Zimmerman, E. D. (2014-07-11)
    This paper explores the use of L/E oscillation probability distributions to compare experimental measurements and to evaluate oscillation models. In this case, L is the distance of neutrino travel and E is a measure of the interacting neutrino's energy. While comparisons using allowed and excluded regions for oscillation model parameters are likely the only rigorous method for these comparisons, the L/E distributions are shown to give qualitative information on the agreement of an experiment's data with a simple two-neutrino oscillation model. In more detail, this paper also outlines how the L/E distributions can be best calculated and used for model comparisons. Specifically, the paper presents the L/E data points for the final MiniBooNE data samples and, in the Appendix, explains and corrects the mistaken analysis published by the ICARUS collaboration.